/*
 * Copyright (c) 2022. China Mobile (SuZhou) Software Technology Co.,Ltd. All rights reserved.
 * Lakehouse is licensed under Mulan PSL v2.
 * You can use this software according to the terms and conditions of the Mulan PSL v2.
 * You may obtain a copy of Mulan PSL v2 at:
 *          http://license.coscl.org.cn/MulanPSL2
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PSL v2 for more details.
 */

package com.chinamobile.cmss.lakehouse.engine.spark

import org.apache.spark.sql.catalyst.analysis.UnresolvedRelation
import org.apache.spark.sql.execution.SparkSqlParser

import scala.collection.JavaConverters._

object SqlTools {
  def getTables(sqlContext: String): java.util.List[String] = {
    val plan = new SparkSqlParser().parsePlan(sqlContext)
    val tableNames = plan.collect { case p: UnresolvedRelation => p.tableName }
    tableNames.asJava
  }
}
